SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Literal \'max(key) from tab_00612 any left join (select key, arrayJoin(n.x) as val from tab_00612) using key where (key, val) in ((1, 1), (2, 2))\'